BGS mineralogy and petrology collection record

Sample number	E38721; COLLNOCE1;
Sample Donor	Evans,C.D.R.
Rock name	'Original entry: Rhyolite'
Stratigraphy	Not entered
Comments	Margin of nodular rhyolitic plug
Locality details	140 yds 9 deg from Hafod Gwenllian
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View the geology near 'Snowdon'
Map reference	SH 7174 5113
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.